<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card>
      <!-- 搜索添加 -->
      <el-row :gutter="20">
        <el-col :span="7">
          <el-input
            placeholder="请输入内容"
            v-model="queryinfo.query"
            clearable
            @clear="getUserList"
          >
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getUserList"
            ></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true"
            >添加用户</el-button
          >
        </el-col>
      </el-row>
      <el-table :data="userlist" border stripe>
        <el-table-column type="index" label="序号"></el-table-column>
        <el-table-column prop="username" label="姓名"> </el-table-column>
        <el-table-column prop="email" label="邮箱"> </el-table-column>
        <el-table-column prop="mobile" label="电话"> </el-table-column>
        <el-table-column prop="role_name" label="角色"> </el-table-column>
        <el-table-column label="状态">
          <template slot-scope="scope">
            <el-switch
              v-model="scope.row.mg_state"
              @change="userstatechange(scope.row)"
            >
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="showEditDialog(scope.row.id)"
            ></el-button>
            <!-- 删除按钮 -->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="delUser(scope.row.id)"
            ></el-button>
            <!-- 分配角色按钮 -->
            <el-tooltip
              effect="dark"
              content="分配角色"
              placement="top"
              :enterable="false"
            >
              <el-button
                type="warning"
                icon="el-icon-setting"
                size="mini"
                @click="setRole(scope.row)"
              ></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryinfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryinfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
      </el-pagination>
    </el-card>
    <!-- 用户列表 -->
    <!-- 添加用户的对话框 -->
    <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
      <!-- 内容主体区 -->
      <el-form
        :model="addForm"
        :rules="addFormrules"
        ref="addFormref"
        label-width="70px"
      
      >
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="adduser" >确 定</el-button
        >
      </span>
    </el-dialog>
    <!-- 修改用户的对话框 -->
    <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed" >
      <!-- 内容主体区 -->
<el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
    <el-form-item label="用户名">
        <el-input v-model="editForm.username" disabled></el-input>
    </el-form-item>
    <el-form-item label="邮箱" prop="email">
        <el-input v-model="editForm.email"></el-input>
    </el-form-item>
    <el-form-item label="电话" prop="mobile">
        <el-input v-model="editForm.mobile"></el-input>
    </el-form-item>
</el-form>
      <!-- 底部区 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUser" >确 定</el-button
        >
      </span>
    </el-dialog>
    <!-- 分配角色的对话框 -->
    <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%" @close="setRoleDialogClosed">
    <div>
    <p>当前的用户:{{userInfo.username}}</p>
    <p>当前的角色:{{userInfo.role_name}}</p>
    <p>分配新角色: 
      <el-select v-model="selectedRoleId" placeholder="请选择">
    <el-option
      v-for="item in rolesList"
      :key="item.id"
      :label="item.roleName"
      :value="item.id">
    </el-option>
  </el-select></p>
    </div>
    <span slot="footer" class="dialog-footer">
    <el-button @click="setRoleDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
    </span>
</el-dialog>
  </div>
</template>

<script>
export default {
  created() {
    this.getUserList();
  },
  data() {
    var checkEmail = (rule, value, cb) => {
      const regEmail = /^\w+@\w+(\.\w+)+$/;
      if (regEmail.test(value)) {
        return cb();
      }
      //返回一个错误提示
      cb(new Error("请输入合法的邮箱"));
    };
    //验证手机号码的规则
    var checkMobile = (rule, value, cb) => {
      const regMobile = /^1[34578]\d{9}$/;
      if (regMobile.test(value)) {
        return cb();
      }
      //返回一个错误提示
      cb(new Error("请输入合法的手机号码"));
    };
    return {
      queryinfo: {
        query: "",
        pagenum: 1,
        pagesize: 2,
      },
      userlist: [],
      total: 0,
      addDialogVisible: false,
      addForm: {
        username: "",
        password: "",
        email: "",
        mobile: "",
      },
      // 添加表单的验证规则对象
      addFormrules: {
        username: [
          { required: true, message: "请输入用户名", trigger: "blur" },
          {
            min: 3,
            max: 10,
            message: "长度在 3 到 10 个字符",
            trigger: "blur",
          },
        ],
        password: [
          { required: true, message: "请输入密码", trigger: "blur" },
          {
            min: 6,
            max: 15,
            message: "长度在 3 到 15 个字符",
            trigger: "blur",
          },
        ],
        email: [
          { required: true, message: "请输入邮箱地址", trigger: "blur" },
          { validator: checkEmail, trigger: "blur" },
        ],
        mobile: [
          { required: true, message: "请输入手机号码", trigger: "blur" },
          { validator: checkMobile, trigger: "blur" },
        ],
      },
      //控制修改用户对话框
      editDialogVisible: false,
      editForm: {},
      editFormRules:{
        email: [
          { required: true, message: "请输入邮箱地址", trigger: "blur" },
          { validator: checkEmail, trigger: "blur" },
        ],
        mobile: [
          { required: true, message: "请输入手机号码", trigger: "blur" },
          { validator: checkMobile, trigger: "blur" },
        ],
      },
      //控制分配角色对话框的显示与隐藏
      setRoleDialogVisible:false,
      userInfo:{},
      // 所有角色的列表
      rolesList:{},
      //保存用户选中的角色id
    selectedRoleId:''
    };
  },
  methods: {
    async getUserList() {
      const { data: res } = await this.$http.get("users", {
        params: this.queryinfo,
      });
      if (res.meta.status !== 200) return this.$message.err("用户获取失败");
      console.log(res);
      this.userlist = res.data.users;
      this.total = res.data.total;
    },
    // 监听pagesize的变化
    handleSizeChange(newSize) {
      this.queryinfo.pagesize = newSize;
      this.getUserList();
    },
    // 监听页码值变化
    handleCurrentChange(newSize) {
      this.queryinfo.pagenum = newSize;
      this.getUserList();
    },
    // 监听switch开关状态的改变
    async userstatechange(userinfo) {
      console.log(userinfo);
      const { data: res } = await this.$http.put(
        `users/${userinfo.id}/state/${userinfo.mg_state}`
      );
      if (res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state;
        return this.$message.err("更新用户状态失败");
      }
      this.$message.success("更新用户状态成功");
    },
    // 监听对话框的关闭
    addDialogClosed() {
      this.$refs.addFormref.resetFields();
    },
    //添加用户
    adduser() {
      this.$refs.addFormref.validate(async (valid) => {
        if (!valid) return;
        const { data: res } = await this.$http.post("users", this.addForm);
        if (res.meta.status !== 201) {
          this.$message.err("用户添加失败");
        }
        this.$message.success("添加用户成功");
        this.addDialogVisible = false;
        // 重新获取用户列表数据
        this.getUserList();
      });
    },
    //展示编辑用户的对话框
    async showEditDialog(id) {
      const { data: res } = await this.$http.get("users/" + id);
      //判断如果添加失败，就做提示
      if (res.meta.status !== 200)
        return this.$message.error("获取用户信息失败");
      //将获取到的数据保存到数据editForm中
      this.editForm = res.data;
      //显示弹出窗
      this.editDialogVisible = true;
    },
    editDialogClosed() {
      this.$refs.editFormRef.resetFields();
    },
    editUser() {
    //用户点击修改表单中的确定按钮之后，验证表单数据
    this.$refs.editFormRef.validate(async valid => {
    if (!valid) return this.$message.error('请填写完整用户信息')
    //发送请求完成修改用户的操作
    const { data: res } = await this.$http.put('users/' + this.editForm.id,this.editForm)
    //判断如果修改失败，就做提示
    if (res.meta.status !== 200) return this.$message.error('修改用户失败')
    //修改成功的提示
    this.$message.success('修改用户成功')
    //关闭对话框
    this.editDialogVisible = false
    //重新请求最新的数据
    this.getUserList()
    })
    },
    async delUser(id){
    const confirmResult = await this.$confirm('请问是否要永久删除该用户','删除提示',{
    confirmButtonText:'确认删除',
    cancelButtonText:'取消',
    type:'warning'
    }).catch(err=>err)
    //如果用户点击确认，则confirmResult 为'confirm'
    //如果用户点击取消, 则confirmResult获取的就是catch的错误消息'cancel'
    if(confirmResult != "confirm"){
        return this.$message.info("已经取消删除")
    }
      const { data: res } = await this.$http.delete('users/'+id)
      if(res.meta.status !== 200)  return this.$message.err('删除用户失败')
      this.$message.success('删除用户成功')
      this.getUserList()
    },
     async setRole( userInfo ){
      //保存起来以供后续使用
      this.userInfo = userInfo;
      //获取所有的角色信息，以备下拉列表使用
      //发送请求根据id完成删除操作
      const { data: res } = await this.$http.get('roles')
      //判断如果删除失败，就做提示
      if (res.meta.status !== 200) return this.$message.error('获取角色列表失败')
      
      this.rolesList = res.data;
      console.log(this.rolesList);
      //展示分配角色对话框
      this.setRoleDialogVisible = true;

      
    },
     async saveRoleInfo(){
      //当用户点击确定按钮之后
      //判断用户是否选择了需要分配的角色
      if(!this.selectedRoleId){
        return this.$message.error('请选择需要分配的角色')
      }
      //发送请求完成分配角色的操作
      const {data:res} = await this.$http.put(`users/${this.userInfo.id}/role`,{rid:this.selectedRoleId})

      //判断如果删除失败，就做提示
      if (res.meta.status !== 200)
        return this.$message.error('分配角色失败')

      this.$message.success('分配角色成功')
      this.getUserList();
      //关闭对话框
      this.setRoleDialogVisible = false
    },
    setRoleDialogClosed(){
      //当关闭对话框的时候，重置下拉框中的内容
      this.selectedRoleId = ''
      this.userInfo = {}
    }

  },

};
</script>

<style lang="less" scoped>
.el-breadcrumb {
  margin-bottom: 15px;
  font-size: 12px;
}
.el-card {
  box-shadow: 0 1px 1px rgba(0, 0, 0, 0.15) !important;
}
.el-table {
  margin-top: 15px;
  font-size: 12px;
}
.el-pagination {
  margin-top: 15px;
}
</style>